Book excerpt: The 100 Cases series provides a novel learning and revision tool that works by guiding the reader through each clinical case in a highly structured manner. Each scenario provides details of the patient's medical history and the key findings of a clinical examination, together with initial investigation results data for evaluation. Key questions then prompt the reader to evaluate the patient, and reach a decision regarding their condition and the possible treatment plan, while the answer pages reveal the processes a clinician goes through in such situations. The volumes are designed with the student in mind, and include features to aid self-directed learning, clinical reasoning and problem-solving. 100 Cases in Paediatrics covers the following subject areas: Respiratory, Cardiology, Endocrinology and diabetes, Gastroenterology, Nephrology, Infections, Dermatology, Haematology, Oncology, Bones and joints, Neurology, Child and Adolescent Psychiatry, Neonatology, Miscellaneous